A bag or sac in animals, which serves as the receptacle of some fluid; as, the urinary bladder; the gall bladder; applied especially to the urinary bladder, either within the animal, or when taken out and inflated with air
A hollow bag which can be inflated In some instances, fuel tanks will become rusty inside A possible cure is to install a bladder This is done by flushing out the rust chips, applying an acid solution to remove any oil/gas residue, and coating the inside with a plastic compound When done correctly, this plastic coating does not dissolve when it comes in contact with gasoline